I am replacing the gear lube in my back axle with synthetic

2005 FORD F-150
70,000 MILES • V8 • 4WD • AUTOMATIC
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TRLOUKS
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I am replacing the gear lube in my back axle with synthetic. How much lube do I need to buy to do it?
Jun 3, 2010 at 8:19 AM
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JACOBANDNICKOLAS
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It is based on the size of the differential. If it is a 8.8 or 9.75" it takes 5.50 PTS. If it is the 10.25" it takes 6.50 PTS.

Both use SAE75W - 140 Synthetic Rear Differential Oil.

Let me know if you have other questions.

Joe
May 17, 2021 at 1:20 PM